Four men working on a South of Market high-rise construction project were injured Friday morning after the scaffolding on which they stood collapsed.
One of the men suffered a broken femur and another likely a broken rib, said Julie Chase, a spokeswoman for the One Rincon Hill project.
The two other workers had cuts and bruises but sustained no serious injuries, Chase said. The Webcor Concrete workers were on the third floor of the 55-story, $290 million project at 425 First St. when the collapse occurred around 10:45 a.m., Fire Department spokeswoman Mindy Talmadge said.
The four were transported by ambulance to San Francisco General Hospital for treatment, Chase said. The construction site was shut down for the day and an investigation is under way. The California Occupational Safety and Health Administration was notified, Talmadge said.
The men fell between 8 and 12 feet after the wood and metal scaffolding collapsed.
Chase said the building, which has a 45-story twin, is just coming out of the ground. The building broke ground earlier this year.